<template>
    <div>
        <el-tabs type="border-card">
            <el-tab-pane label="秒" v-if="shouldHide('second')">
                <CrontabSecond
                        @update="updateCrontabValue"
                        :check="checkNumber"
                        :cron="crontabValueObj"
                        ref="cronsecond"
                />
            </el-tab-pane>

            <el-tab-pane label="分钟" v-if="shouldHide('min')">
                <CrontabMin
                        @update="updateCrontabValue"
                        :check="checkNumber"
                        :cron="crontabValueObj"
                        ref="cronmin"
                />
            </el-tab-pane>

            <el-tab-pane label="小时" v-if="shouldHide('hour')">
                <CrontabHour
                        @update="updateCrontabValue"
                        :check="checkNumber"
                        :cron="crontabValueObj"
                        ref="cronhour"
                />
            </el-tab-pane>

            <el-tab-pane label="日" v-if="shouldHide('day')">
                <CrontabDay
                        @update="updateCrontabValue"
                        :check="checkNumber"
                        :cron="crontabValueObj"
                        ref="cronday"
                />
            </el-tab-pane>

            <el-tab-pane label="月" v-if="shouldHide('month')">
                <CrontabMonth
                        @update="updateCrontabValue"
                        :check="checkNumber"
                        :cron="crontabValueObj"
                        ref="cronmonth"
                />
            </el-tab-pane>

            <el-tab-pane label="周" v-if="shouldHide('week')">
                <CrontabWeek
                        @update="updateCrontabValue"
                        :check="checkNumber"
                        :cron="crontabValueObj"
                        ref="cronweek"
                />
            </el-tab-pane>

            <el-tab-pane label="年" v-if="shouldHide('year')">
                <CrontabYear
                        @update="updateCrontabValue"
                        :check="checkNumber"
                        :cron="crontabValueObj"
                        ref="cronyear"
                />
            </el-tab-pane>
        </el-tabs>

        <div class="popup-main">
            <div class="popup-result">
                <p class="title">时间表达式</p>
                <table>
                    <thead>
                    <th v-for="item of tabTitles" :key="item">{{item}}</th>
                    <th>Cron 表达式</th>
                    </thead>
                    <tbody>
                    <td>
                        <span v-if="crontabValueObj.second.length < 10">{{crontabValueObj.second}}</span>
                        <el-tooltip v-else :content="crontabValueObj.second" placement="top"><span>{{crontabValueObj.second}}</span>
                        </el-tooltip>
                    </td>
                    <td>
                        <span v-if="crontabValueObj.min.length < 10">{{crontabValueObj.min}}</span>
                        <el-tooltip v-else :content="crontabValueObj.min" placement="top">
                            <span>{{crontabValueObj.min}}</span></el-tooltip>
                    </td>
                    <td>
                        <span v-if="crontabValueObj.hour.length < 10">{{crontabValueObj.hour}}</span>
                        <el-tooltip v-else :content="crontabValueObj.hour" placement="top"><span>{{crontabValueObj.hour}}</span>
                        </el-tooltip>
                    </td>
                    <td>
                        <span v-if="crontabValueObj.day.length < 10">{{crontabValueObj.day}}</span>
                        <el-tooltip v-else :content="crontabValueObj.day" placement="top">
                            <span>{{crontabValueObj.day}}</span></el-tooltip>
                    </td>
                    <td>
                        <span v-if="crontabValueObj.month.length < 10">{{crontabValueObj.month}}</span>
                        <el-tooltip v-else :content="crontabValueObj.month" placement="top"><span>{{crontabValueObj.month}}</span>
                        </el-tooltip>
                    </td>
                    <td>
                        <span v-if="crontabValueObj.week.length < 10">{{crontabValueObj.week}}</span>
                        <el-tooltip v-else :content="crontabValueObj.week" placement="top"><span>{{crontabValueObj.week}}</span>
                        </el-tooltip>
                    </td>
                    <td>
                        <span v-if="crontabValueObj.year.length < 10">{{crontabValueObj.year}}</span>
                        <el-tooltip v-else :content="crontabValueObj.year" placement="top"><span>{{crontabValueObj.year}}</span>
                        </el-tooltip>
                    </td>
                    <td class="result">
                        <span v-if="crontabValueString.length < 90">{{crontabValueString}}</span>
                        <el-tooltip v-else :content="crontabValueString" placement="top">
                            <span>{{crontabValueString}}</span></el-tooltip>
                    </td>
                    </tbody>
                </table>
            </div>
            <CrontabResult :ex="crontabValueString"></CrontabResult>

            <div class="pop_btn">
                <el-button type="primary" @click="submitFill">确定</el-button>
                <el-button type="warning" @click="clearCron">重置</el-button>
                <el-button @click="hidePopup">取消</el-button>
            </div>
        </div>
    </div>
</template>

<script setup>
    import CrontabSecond from "./second.vue"
    import CrontabMin from "./min.vue"
    import CrontabHour from "./hour.vue"
    import CrontabDay from "./day.vue"
    import CrontabMonth from "./month.vue"
    import CrontabWeek from "./week.vue"
    import CrontabYear from "./year.vue"
    import CrontabResult from "./result.vue"

    const {proxy} = getCurrentInstance()
    const emit = defineEmits(['hide', 'fill'])
    const props = defineProps({
        hideComponent: {
            type: Array,
            default: () => [],
        },
        expression: {
            type: String,
            default: ""
        }
    })
    const tabTitles = ref(["秒", "分钟", "小时", "日", "月", "周", "年"])
    const tabActive = ref(0)
    const hideComponent = ref([])
    const expression = ref('')
    const crontabValueObj = ref({
        second: "*",
        min: "*",
        hour: "*",
        day: "*",
        month: "*",
        week: "?",
        year: "",
    })
    const crontabValueString = computed(() => {
        const obj = crontabValueObj.value
        return obj.second
            + " "
            + obj.min
            + " "
            + obj.hour
            + " "
            + obj.day
            + " "
            + obj.month
            + " "
            + obj.week
            + (obj.year === "" ? "" : " " + obj.year)
    })
    watch(expression, () => resolveExp())

    function shouldHide(key) {
        return !(hideComponent.value && hideComponent.value.includes(key))
    }

    function resolveExp() {
        // 反解析 表达式
        if (expression.value) {
            const arr = expression.value.split(/\s+/)
            if (arr.length >= 6) {
                //6 位以上是合法表达式
                let obj = {
                    second: arr[0],
                    min: arr[1],
                    hour: arr[2],
                    day: arr[3],
                    month: arr[4],
                    week: arr[5],
                    year: arr[6] ? arr[6] : ""
                }
                crontabValueObj.value = {
                    ...obj,
                }
            }
        } else {
            // 没有传入的表达式 则还原
            clearCron()
        }
    }

    // tab切换值
    function tabCheck(index) {
        tabActive.value = index
    }

    // 由子组件触发，更改表达式组成的字段值
    function updateCrontabValue(name, value, from) {
        crontabValueObj.value[name] = value
    }

    // 表单选项的子组件校验数字格式（通过-props传递）
    function checkNumber(value, minLimit, maxLimit) {
        // 检查必须为整数
        value = Math.floor(value)
        if (value < minLimit) {
            value = minLimit
        } else if (value > maxLimit) {
            value = maxLimit
        }
        return value
    }

    // 隐藏弹窗
    function hidePopup() {
        emit("hide")
    }

    // 填充表达式
    function submitFill() {
        emit("fill", crontabValueString.value)
        hidePopup()
    }

    function clearCron() {
        // 还原选择项
        crontabValueObj.value = {
            second: "*",
            min: "*",
            hour: "*",
            day: "*",
            month: "*",
            week: "?",
            year: "",
        }
    }

    onMounted(() => {
        expression.value = props.expression
        hideComponent.value = props.hideComponent
    })
</script>

<style lang="scss" scoped>
    .pop_btn {
        text-align: center;
        margin-top: 20px;
    }

    .popup-main {
        position: relative;
        margin: 10px auto;
        background: #fff;
        border-radius: 5px;
        font-size: 12px;
        overflow: hidden;
    }

    .popup-title {
        overflow: hidden;
        line-height: 34px;
        padding-top: 6px;
        background: #f2f2f2;
    }

    .popup-result {
        box-sizing: border-box;
        line-height: 24px;
        margin: 25px auto;
        padding: 15px 10px 10px;
        border: 1px solid #ccc;
        position: relative;
    }

    .popup-result .title {
        position: absolute;
        top: -28px;
        left: 50%;
        width: 140px;
        font-size: 14px;
        margin-left: -70px;
        text-align: center;
        line-height: 30px;
        background: #fff;
    }

    .popup-result table {
        text-align: center;
        width: 100%;
        margin: 0 auto;
    }

    .popup-result table td:not(.result) {
        width: 3.5rem;
        min-width: 3.5rem;
        max-width: 3.5rem;
    }

    .popup-result table span {
        display: block;
        width: 100%;
        font-family: arial;
        line-height: 30px;
        height: 30px;
        white-space: nowrap;
        overflow: hidden;
        border: 1px solid #e8e8e8;
    }

    .popup-result-scroll {
        font-size: 12px;
        line-height: 24px;
        height: 10em;
        overflow-y: auto;
    }
</style>